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Advisories

YaCy Search Server through 1.941 XML External Entity Injection via Parsers

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severity
high
date
Affecting

  • yacy_search_server <= 1.941

CWE
  • CWE-611 Improper Restriction of XML External Entity Reference
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
Yu Sun
Description
YaCy Search Server through 1.941 contains an XML external entity injection vulnerability in SVG, FreeMind, and OpenSearch parsers that fail to disable external entity resolution. Attackers can publish malicious documents with DOCTYPE declarations containing SYSTEM entities pointing to local files, causing the crawler to exfiltrate file contents into the searchable index.

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